Greenberg and Vatsal [1]} show that if \(E_1\)  and \(E_2\)  are two elliptic curves defined over \(\mathbb {Q}\)  which are congruent modulo \(p\) , then if the equalities
\(\mu _{E_1}^{alg}=\mu _{E_1}^{anal}=0\text{, and }\lambda _{E_1}^{alg}=\lambda _{E_1}^{anal}\) 
